package com.ziyucoding.springboot.labs.lab4.concurrentdemo.example.web;

import com.ziyucoding.springboot.labs.lab4.concurrentdemo.example.threadlocal.RequestHolder;
import lombok.extern.slf4j.Slf4j;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;

/**
 * Http过滤器
 *
 * @author ziyucoding
 * @date 2022-11-27
 **/
@Slf4j
public class HttpFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
//        log.info("do filter, {}, {}", Thread.currentThread().getId(), request.getServletPath());
        // 添加线程ID
        RequestHolder.add(Thread.currentThread().getId());
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {

    }

}
